Our double hung windows featurea patented swing-in design that enables you to clean your windowsat eye level without supporting theweight of the sash or even movingany curtains, draperies, or furniture.Just swing out, clean, swing in, andyou're done. Watch the brief videoat right to see how easy it is tooperate the best double hung replacement windows Pittsburghhas to offer.Our History: How A Nerdy Engineer Trapped In A Basketball Player’s Body Absolutely Revolutionized The Window WorldBy comparison, with old-fashioned tilt windows you need to movedraperies, curtains, and furniture. Then you have to tilt-in the bottomsash and support it while reaching over to tilt-in the top sash. Now youhave to support the weight of the sashes as you clean them. Beforeyou’re finished, you have to reverse this cumbersome process to fullyclose the window. Cleaning all the windows in your home shouldnot take you an entire day.